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Unlock your hotel room door with your cell phoneLose your hotel key card? Did it accidentally get demagnetized? Well, there's a new, high-tech way to get into your room: mobile keys that let guests unlock their doors with their cell phones. CNET's Kara Tsuboi reports.
It's. Tell union square in downtown San Francisco is packed with history that hotel guests can now unlock with very modern technology. We are in the Daschle -- sweet and it's kind of a coincidence that we're filming here because he typed on a typewriter and we're talking about mobile key. Wireless access to you. When he -- checks into this hotels you can download the free personality hotels out onto your Smartphone. Once the desk clerk assigned to room and alerts the app when against reaches the door she presses the key icon to emit a sound activate the door sensor and -- the -- I think that our guests are embracing that because they're right here. Where all the high technology and new technology is happening. As a security measure in case the phone is lost or stolen guests can create a special pin for the app in addition to the -- on their phone. It doesn't say which totality hand they would know the room number. Personality hotels isn't the only group to experiment with mobile keys. Some properties and -- Starwood -- group like a loft are expected to roll out their version of the technology in the coming months besides guest convenience there's also the environmental impact Yvonne deterred from personality hotels estimates that at least 100000. Plastic key cards are handed out at her for San Francisco hotels. Every year. Five years from now it may just be become pregnant in May be the classes you're wearing that have the computers that -- that they just blinked at the lock in your in. Plasticky cards are still available for those who prefer the old fashioned way. And San Francisco and cars tsuboi cnet.com for CBS news.